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Heat with Lightener/Hair Color
Hello all, I am a hairdresser with a penchant for the chemical side of my business… I am also an educator for a global color company. Years ago I was given a mathematical (yet simple) way to know how heat affects lightener and Hair Color. I need to know if there is any validity in this claim or if there is another equation to figure out how this works. It is Chemistry after all. so there must be a fixed ratio on how it works.
Heat information chart-
70 degrees in room 100 degrees under dryer-
30 degree difference-
For every 5 degrees warmer under Dryer is equal to 2 volume more in peroxide
30/5=6
6×2= 12
10 vol = 22 vol
20 vol= 32 vol
30 vol= 42 vol
40 vol= 52 vol
Is there any validity? If not how can I prove/disprove my theory?
Thank you in advance for your help on this,
Lasha
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5 Replies
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heat makes peroxide work more quickly: it doesn’t change the actual amount of peroxide
I strongly suspect the variation seen in practise depends on the structure, amount and condition of the hair of each individual, and is unlikely to have a simple linear rate/temperature correlation like this, simply because the reaction between peroxide and melanin has a very complex mechanism
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I understand that… All peroxides work differently on different hair types. No it doesn’t change the amount of peroxide. but since the stronger the peroxide used the faster it lifts. then there must be some sort of correlation between the heat (energy) and the strength of peroxide. because when you add a heat source the hair lifts quicker. I.E. Causing more damage if you’re not careful.
The main purpose of this statement is to be able to stand on stage and speak to to 900 stylists and attempt to convince them to follow the manufacturers directions and to use a fixed (no heat) ratio in the reaction. Considering you never can tell exactly how hot the dryer/heat lamp may be. Using a higher volume of developer as you continue through your application instead of putting the entire head under heat and making hair that has completed its process break off. After all it is the individual stylists that break the hair by not knowing how to use the chemicals properly.
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Also, and it should have come first… thank you @Bill_Toge
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Even if there isn’t a mathematical equation. There has to be a way to explain it chemically. because you’re adding heat (energy) there still has to be a way to explain it that has a fixed point no?
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i think you are saying or want to say heat is inversely proportional to the % strength of H2O2 to provide lightening with minimal damage during use.In other words the higher the temp the less concentrated the H2O2 needed to lighten with minimal damage.You are a salon guy what about time ?
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